Gas-engine head



Feb. 24.71925'.

` 1,527,677 D. J. EGAN @As ENGINE HEAD Fil'ed sept.- 1c, 1924 2Sheets-sheet 1 3mm/Hoff D .ani-E1 biggrin' D. J. EGAN GAS'ENGINE HEADFiled Sep-t. 10 f V Feb.- 24.- 1925.

1924 2 Sheets-Sheet 2 Patented Feb. 24, 1925.

UNITED ST DANIEL JOSEPH EGAN, O3? IPICHER, OKLAHOMA.

, GAS-ENGINE HEAD.

Application filed September 10, 1924. Serial No. 737,016.

To all whom t may concern.'

Be it known that I, DANIEL Josnrn EGAN, ,a citizen of the United States,residing Aat Picher, in the county of Ottawa and State of Oklahoma, haveinvented certain new and useful Improvements in Gras-En gine Heads, ofwhich the following is a specilication.

The present invention relates to internal combustion engines, and moreparticularly to the head construction.

An object of this invention is to provide a detachable head which is ofthe type adapted for use on the internal combustion engine known as theBessemer engine, and which is an improvement upon the various headswhich have heretofore been designed and used for this type of engine. gAnother object of the invention is to provide a head which may be madein two pieces and constructed of steel and which is also provided with awater jacket of ample proportions.

Another object of the invention is to provide a two piece steel headwhich permits of easy access to the interior of the water jacket, whichis provided with relatively large spaces for water circulation, andwhich is equipped with attaching bolts and housings therefor to protectthe bolts from direct contact with the water in the jacket.

Another object of the present invention is to provide a. head with apair of cupped shaped sections one larger than the other and which arearranged to interiit with a `space therebetween for water and which areinterconnected by'tubes or pipes which reg ister with openings throughsaid sectionsfor receiving bolts for fastening the head in place andwhich protect the bolts from direct contact with the water in thejacket.

A still further object of the invention is to provide the head with aremovable plate or cover which forms a wall of the water jacket andwhich may be easily and quickly removed independently of the head togain access to the interior of the water jacketV without disturbingtheseating of the head on the cylinder.

The above and various other objects and` advantages of this inventionwill in partbe described in and in part be understood from the followingdetailed description of the present preferred embodiment, the same beingillustrated in the accompanying drawings, wherein:

Figure 1 is an outer plan view ofthe head.

Fig. 2 is a fragmentarylongitudinal section through the head andadjacent part of a cylinder taken substantially lon the line 2-2 ofFigure 1.

Fig. 3 is a. transverse section through the head taken on the line 3-3of Figure 2. Fig. 4 is a longitudinal section similar view of the headlike Fig. 2 but taken substantially on the line 4-4 of Figure 1.

Fig. 5 is a. longitudinal section taken through the outer section of thehead.

Fig. 6 is a similar view of the inner section of the head.

Referring to the drawings l0 designates a cylinder of any suitableconstruction which is open at its top and provided in its side wall witha jacket 11 for wat-er or other cooling medium.

Thehead of this invention is preferably made of a pair of pressed steelsections 12 and 13 which are bolted in superposed relation upon the openend of the cylinder 10. These sections 12 and 13 are both rcupped shapedand are pressed from sheet steel to provide heads which are not liableto crack under conditions which invariably crack and destroy cast ironheads.

The inner section 13 is pressed into substantially dome shape to form aninterior diameter equal to that of the cylinder, 10 and provide acontinuation of the cylinder. The section 13 has an outturned annularflange lll of a width equal substantially to the thickness of the wallof the cylinder 10 and which has a plurality of openings 15 whichcommuncate with the waterjacket 11 of the cylinder. This flange 14 Visprovided with an alternate row of, threaded openings which areinterposed the openings or slots 15 and which are adapted to receive theexternally threaded ends of tubes or pipes 16 which are arranged in acircular row upon the flange 14 and about the dome shaped section 18.These tubes 16 terminate a short distance beyond the end of the section13 toV determine the thickness of the water jacketin the head.

The outer section 12 of the head is pressed into substantiallycylindrical form and is of a diameter suiiicient to enclose the section13 and also the tubes 16, the inner edge of the section 12 resting uponthe outer edge portion of the flange 14. The tubes 16 extend outwardlythrough the section 12 and through openings 17 formed in the outer endof the section. The outer end of the section is constructed of' aninwardly extending flange 18 pressed from the steel body of the section12 and which is relatively shallow to provide a large opening in theouter end of the section 12. The section 12 has welded or otherwisesuitably secured` thereto an attaching ring or plate 19 which is securedagainst the outer side of the flange 18 and which preferably extendsinwardly beyond the same to afi'ord ample purchase or a plurality ofbolts 20 which may be screwed into the ring, 19.

The section 12 has a relatively large opening through its outer end toadmit easy access to the interior ora the head, or the space between thesections 12 and 13. r1`he ring 19 is preferably welded to the flange 18and the openings 17 pass through the flange 13 sufliciently to permitthe tubes 16 to pass entirely through the outer section 12 so that theouter section may be firmly seated upon the tlange lll.

VThe assembled heads are adapted to be secured upon their cylinders 10by machine screws 'or bolts 21 which may be of suitable form and whichmay in the present instance comprise bolts which fit snugly in the tubes16 and which are threaded on opposite ends, one end of each bolt beingthreaded in the wall of the cylinder 10 while the other ends of thebolts 21 project beyond the tubes '16 and through the outer section 12of the head for receiving clamping nuts 22 which are adapted to bindagainst the outer surface of the ring 19.

There are preferably 12 of these bolts 21 and a like number of tubeslfor receiving the bolts and for housing the same 'from contact with thewater in the jacket between the sections 12 and 13.

Access to the water jacket had through the opening in the ring 19, andthis opening may be closed by a cover plate 23 of a. sire adapted to'lit in the head is within the circular row ot bolts-21 andV which isheld securely over the ring r19 by the machine screws 20. r1`he sparkplug is threaded in a cage 25 which is suitably sccured in the top ofthe dome section 13 and which is of suflicient depth to extend to theinner side of the cover plate 23, and is provided thereat with anoutturned flange 26 carrying threaded bolts 27 which project through thecover plate and receive clamping nuts 28 thereon Afor binding againstthe plate 23 to seal the platek about the cage 25. r1`he cover plate ispreferably apertured to register with the pocket in the cage so as topermit free access to the spark the middle of plug 211 and toaccommodate the same. 1t is thus seen that a head is provided which maybe made of pressed steel to the desired configuration and which may betightly clamped into place without danger of breakage and which will notreadily crack. The head is also economically constructed Yfrom sheetsteel and is provided with a spacious water jacket adapted to contain arelatively large amount ot water and to admit of a free and unobstructedcirculation of the water. The clamping bolts are protected from co-ntactwith the water and consequently corrosion and deterioration of rthebolts cannot take place. The clamping bolts 21 not only rsecure the headupon the cylinder 10, butl also clamp the two sections 12 and 13 oneupon the other and bind the flange 1li against the end ofthe cylinder10. The flange 14 is therefore bound between thc cylinder 10 and theouter section 12.Y

Access may be readily had to the interior of the water jacket forcleaning out the same by the removal ot the cover plate 23 so that theinterior of the head may be left unobstructed and maintained clear atall times.

T he above and various other detailed construct-ion may be resorted toin carrying out the spirit of this invention without departing therefromand the changes and modifications are restricted only by the scope ofthe following claims.

1 claim: Y

1. A. cylinder head comprising an inner denic shaped ysection having anoutstanding annular fia-nge having openings formed therein, a lsparkplug receiving cup secured in the head of the inner section and having aspark plug receiving opening, a section forming an outer facing,havingan annular wall engaging said flange and enclosing the openingsformed therein and an inwardly eX- tending flange having opening alignedwith certain ot' the openings formed in the flange of the inner section,tubes between the inner and outer sections having their ends secured inthe aligned openings and adapted to rerleive fastener bolts for securingthe cylinder head to a cylinder, a. disc carried by the inwardlyextending flange of the outer section and extending inwardly beyond thesame and provided with a cent-ral opening, said dise provided withopenings registering with the openings in the flange of the outersection, and a cover plate secured to the outer tace Vof said disc andto the outer end portion of' the spark plug receiving cup and having anopening registering with the interor of said plug receiving cup.

2. The combination with a `cylinder and a water jacket about thecylinder, of a cylinder head' comprising an inner dome shaped sectionhaving a head and a. wall ot an internal diameter corresponding to theinternal diameter ot the cylinder wall and an outstanding flangeengaging the ends of the cylinder wall and water jacket and havingOpenings between the cylinder wall and water jacket, an outer sectionhaving an annular wall engaging said flange and enclos.- ing theopenings therein and an inwardly eX- tending annular head forming flangeprovided with openings aligned with Certain of the openings in theflanges of the inner seetion, tubes between the inner and outercylinders having their ends secured in the aligned openings of the innerand outer sections, fastener bolts carried by said cylinder andextending through said tubes and having securing nuts upon their outerends, a closure plate secured to the flange of the outer section andhaving an opening, and a spark plug receiving cupseeured in the head ofthe inner section and secured to the closure plate about the openingtherein.

DANIEL JOSEPH EGAN.

